Fluid absorption study in ultra-high molecular weight polyethylene( UHMWPE) sterilized and unsterilized acetabular cups

被引：25

作者：

Affatato, S

Vandelli, C

Bordini, B

Toni, A

机构：

[1] Ist Ortoped Rizzoli, Lab Tecnol Med, I-40136 Bologna, Italy

[2] Ist Ortoped Rizzoli, Div 1, I-40136 Bologna, Italy

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE | 2001年 / 215卷 / H1期

关键词：

water absorption; serum absorption; polyethylene absorption; fluid absorption; hip simulator;

D O I：

10.1243/0954411011533463

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The weight gain due to fluid absorption was measured in gamma -sterilized, ethylene oxide (ETO) gas-sterilized, and unsterilized ultra-high molecular weight (UHMW) polyethylene acetabular cups. After about 2 months the total average fluid absorption gain of the polyethylene cups was: 1.76 +/- 0.45 mg (average +/- standard deviation) for the unsterilized polyethylene cups, 2.81 +/- 0.95 mg for the gamma -sterilized polyethylene cups and 1.51 +/- 0.34 for the ETO gas-sterilized polyethylene cups. There was little difference in fluid absorption between the sterilized and unsterilized specimens. In particular, the gamma -sterilized acetabular cups absorbed more than the ETO gas-sterilized and the unsterilized cups. However, the weight gain was higher in serum compared with that in water.

引用

页码：107 / 111

页数：5

共 18 条

[1] Hip prothesis:: an in vitro wear protocol based on a comparison between gravimetric and profilometric analysis [J].